graphics display problem with STRATIXII EP2S180

hi,

i have a problem with EP2s180:

I made a design with Stratix II EP2S180 with whom I used a LANCELOT from Microtronix technologies for graphical display.

in SOPC Builder I used a Lancelot component. I made the assignment of pins on the connectors of the stratixII card (Expansion Prototype Connector).

the program runs correctly and the screen is excited but it display nothing.

can someone help me resolves this problem :(

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